Part or all of this page has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.

Node may mean:

• Node (autonomous system), behaviour for an ordinary differential equation near a critical point
• Node (botany), the place on a plant stem where a leaf is attached
• Node (circuits), a region in an electrical circuit where there is no change in potential
• Node (computer science), a basic unit used to build data structures such as linked lists and trees (data structure)
• Node (networking), a device attached to a computer network or other telecommunications network, such as a computer or router, or a point in a network topology at which lines intersect or branch
• Orbital node: the point where an orbit crosses the equator; see Ascending node
• Node (physics), a spatial locus along a standing wave where the wave has minimal amplitude
• Node (UML), the representation of a computational device in the Unified Modeling Language
• Nodes, in list of transport topics
• Node Magazine, a literary project based on the novel Spook Country by William Gibson
• Vertex (graph theory), mathematics Node, one of the components of a graph, connecting two or more edges
• Node, a cyborg with a donated human face that is used as a guide in the universe's largest library, in "Silence in the Library" (Doctor Who)

Nodal may refer to:

• NODAL, a protein involved in TGF beta signalling.